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HD74LS194A Datasheet(PDF) 5 Page - Renesas Technology Corp

Part No. HD74LS194A
Description  4-bit Bidirectional Universal Shift Register
Download  8 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD74LS194A Datasheet(HTML) 5 Page - Renesas Technology Corp

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HD74LS194A
Rev.3.00, Jul.15.2005, page 5 of 7
Testing Table
Inputs
Item
From input to output
CLR
S1
S0
CK
L
R
A
B
C
D
right-shift
4.5V
4.5V
GND
IN
4.5V
IN
GND
GND
GND
GND
ƒmax
left-shift
4.5V
GND
4.5V
IN
IN
4.5V
GND
GND
GND
GND
Clear
→Q
IN
4.5V
4.5V
IN
GND
GND
4.5V
4.5V
4.5V
4.5V
4.5V
4.5V
GND
IN
4.5V
IN
GND
GND
GND
GND
tPLH
tPHL
Clock
→Q
4.5V
4.5V
GND
IN
IN
4.5V
GND
GND
GND
GND
Outputs
Item
From input to output
QA
QB
QC
QD
right-shift
OUT
OUT
OUT
OUT
ƒmax
left-shift
OUT
OUT
OUT
OUT
Clear
→Q
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
tPLH
tPHL
Clock
→Q
OUT
OUT
OUT
OUT
Waveforms 1
(
ƒ
max, CK
→Q)
CK
1.3V 1.3V
1.3V
L, R
Q
tTLH
tw (CK)
tn
tn+1
tTHL
VOH
VOL
0V
3V
0V
3V
10%
10%
90%
1.3V
1.3V
1.3V
1.3V
1.3V
tPHL
1.3V
tPHL
1.3V
tPLH
1.3V
tPLH
tn
tn+1
1.3V
tTLH
10%
90%
90%
tTHL
tsu
tsu
th
th
10%
90%
Notes:
1.
Right-shift is measured with QA at tn + 1, QB at tn + 2, QC at tn + 3, and QD at tn + 4. Left-shift is
measured with QA at tn + 4, QB at tn + 3, QC at tn + 2, and QD at tn + 1.


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